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Search Results: 1 - 10 of 471332 matches for " Joaquín Cortés Plaza "
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Reflexiones en torno a los aportes teóricos y conceptuales de la obra del Dr. Emilio Setién Quesada
Joaquín Cortés Plaza
Simbiosis : Revista Electrónica de Ciencias de la Información , 2011,
Abstract: Se presentan varias de los aportes teóricos y conceptuales que el Dr. Emilio Setién Quesada ha desarrollado a través de sus investigaciones. Específicamente se menciona la identificación de los elementos esenciales y propiciadores de las actividades bibliológicos – informativas. Su concepción de la bibliotecología como parte de las Ciencias Sociales y la proyección del fenómeno bibliotecario como partícipe en la gestión del conocimiento. También se presenta sus se alamientos sobre el carácter creador del trabajo bibliotecario y la promoción de la lectura. Se pretende promover la lectura de sus trabajos y reconocer sus aportaciones en el campo de la bibliotecología y ciencias de la información. Abstract The purpose of this article is to promote Professor Emilio Setien’s works and recognize his contributions in the field of library and information sciences. Display several of the theoretical and conceptual contributions that Professor Setién’s has developed through his investigations. Specifically it mentions the identification of the basic elements that bring about the bibliological –informative activities. His conception of the Library Science as part of the social science and the projection of the librarian work as the promoter of knowledge. It also mentions his ideas about the creative character of the librarian work and the reading promotion.
LA BASE SOCIAL DE LAS COOPERATIVAS DE CRéDITO. LA IMPORTANCIA DE LA RESPONSABILIDAD SOCIAL CORPORATIVA
Francisco Joaquín Cortés García,Luis Jesús Belmonte Ure?a
Revista de Estudios Empresariales. Segunda época , 2010,
Abstract: During the last few years, the cooperatives savings banks sector is experiencing an important adaptation effort towards a more urban and tertiary environment. Although these cooperatives still retain their market shares in the rural areas, they are putting a strong emphasis in developing and growing within urban areas densely populated, offering a wide spectrum of interesting and competitive banking products. From their beginnings, such entities have shown responsible trends in their social interactions; therefore the social economy as well as the local development and their orientation to the shareholders were backed and encouraged. But this effective establishment of the corporative social responsibility is threatened as these entities develop due to a lesser extent participation of their shareholders, a diversification and of their banking activities and also due to a minor cooperative activity. Thus, taking seriously into account the data published by UNACC, INE and Banco de Espa a (1995-2008) an statistical and also a graphical indepth analysis is conducted to study the evolution and trends regarding the shareholders over customers and on investment credit operations ratios as well as the financial profitability. The intention of the cited study is to underline the role of the shareholder, its financial relevance and its influence on how the cooperative savings bank is managed.
Carga de enfermedad atribuible a las afecciones inmunoprevenibles en la población infantojuvenil espa?ola
Cortés,Marta; Pereira,Joaquín; Pe?a-Rey,Isabel; Gènova,Ricard; Amela,Carmen;
Gaceta Sanitaria , 2004, DOI: 10.1590/S0213-91112004000400009
Abstract: objectives: to estimate the burden of disease due to vaccinable diseases and the relative importance of these diseases in the health of the spanish population aged less than 15 years old. methods: disease burden was measured in disability-adjusted life years (dalys). dalys were computed by adding years of life lost (yll) to years lived with disability (yld). the dalys of the spanish population aged less than 15 years old were estimated for 1999 and were stratified by diseases according to the classification system of the global burden of disease (adapted to the aim of the study), age group and gender. diseases included in the childhood vaccination schedule, varicella, and pneumococcal disease were targeted for this study. the sources used were: the national mortality register to compute yll, the epidemiologic surveillance national network, hospital discharge data (cmbd) and the scientific literature to compute yld due to vaccinable diseases, and world health organization estimates (euro-a) or, when these were lacking, morbidity hospital data (hospital morbidity survey) to compute the yld due to non-vaccinable diseases. results: the burden of disease due to vaccinable diseases was 1.2% of global dalys (the overall dalys rate was 46,57/1,000 habitants): diseases included in the vaccination schedule represented 0.00% to 0.03%, depending on age groups, except meningococcal infection (between 0.5% and 3.3%). pneumococcal meningitis represented 0.06% to 0.65% and varicella 0.00% to 0.15%, also depending on age groups. conclusions: disease burden due to vaccinable diseases is a good indicator of the health of the young population in spain. this measure summarizes and combines information on mortality, morbidity and disability caused by diseases. the dalys attributable to diseases included in the vaccination schedule demonstrate that immunization programs have achieved their goals.
Diabetic Renal-Retinal Syndrome and Inflammatory Markers of Acute Phase  [PDF]
Francisco Jesús Sepúlveda-Ca?amar, Raúl Trevi?o Hernández, Joaquín Darío Trevi?o Baéz, Jesús H. González Cortés
Journal of Diabetes Mellitus (JDM) , 2014, DOI: 10.4236/jdm.2014.43028
Abstract:

Objective: To determine the association between the acute inflammatory markers and Diabetic Renal-Retinal Syndrome in our patients. Methods: A total of 44 patients were included in this transverse (cross sectional), observational, analytical, and comparative study. Two groups of patients were created. Results: In patients with chronic renal failure, stages 3, 4, or 5 (scale 1 to 5) were identified and divided into two groups: Group I (Patients with concomitant diabetic retinopathy stabilized with photocoagulation) 22 patients. Group II (Patients with progression of retinopathy, after photocoagulation, in the form of intraocular bleeding) 22 patients. The number of patients with chronic renal failure in stage 3 was: Group I; 16. In Group II; 12 patients (OR: 1.0). Stage 4: Group I; 4 patients. Group II: 3 patients (OR: 1.0, CI 95%; 0.3843 - 2.021). Stage 5: Group I; 2 patients. Group II; 7 patients (OR: 1.8148, CI 95%; 1.0448 - 3.1523; Chi-squared (x2) 2.7450, p = 0.097). t-Test found statistical significance in Erythrocyte Sedimentation Rate (ESR): p < 0.0001 (CI 95%; 7.8959 - 23.2515); R = 0.56 p = 0.001; and OR = 1.959 (CI 95%; 1.193 - 3.217). By non-parametric tests, C-reactive protein with binomial test showed p < 0.001. ESR showed p < 0.001 with U of Mann Whitney. Conclusions: With this study revealed a possible association of inflammatory markers with Diabetic Renal-Retinal Syndrome.

Comparative Kinetic Study and Microwaves Non-Thermal Effects on the Formation of Poly(amic acid) 4,4′-(Hexafluoroisopropylidene)diphthalic Anhydride (6FDA) and 4,4′-(Hexafluoroisopropylidene)bis(p-phenyleneoxy)dianiline (BAPHF). Reaction Activated by Microwave, Ultrasound and Conventional Heating
Hugo Mendoza Tellez,Joaquín Palacios Alquisira,Carlos Rius Alonso,José Guadalupe López Cortés,Cecilio Alvarez Toledano
International Journal of Molecular Sciences , 2011, DOI: 10.3390/ijms12106703
Abstract: Green chemistry is the design of chemical processes that reduce or eliminate negative environmental impacts. The use and production of chemicals involve the reduction of waste products, non-toxic components, and improved efficiency. Green chemistry applies innovative scientific solutions in the use of new reagents, catalysts and non-classical modes of activation such as ultrasounds or microwaves. Kinetic behavior and non-thermal effect of poly(amic acid) synthesized from (6FDA) dianhydride and (BAPHF) diamine in a low microwave absorbing p-dioxane solvent at low temperature of 30, 50, 70 °C were studied, under conventional heating (CH), microwave (MW) and ultrasound irradiation (US). Results show that the polycondensation rate decreases (MW > US > CH) and that the increased rates observed with US and MW are due to decreased activation energies of the Arrhenius equation. Rate constant for a chemical process activated by conventional heating declines proportionally as the induction time increases, however, this behavior is not observed under microwave and ultrasound activation. We can say that in addition to the thermal microwave effect, a non-thermal microwave effect is present in the system.
Edad, aprendizaje, tiempo quirúrgico y complicaciones en la cirugía videolaparoscópica
Pita Armenteros,Luis Miguel; Castrillón álvarez,Orlando; Acosta Goedes,Isabel Cristina; Gallo Cortés,Floralia; Hernández Torres,Joaquín;
Revista Cubana de Cirug?-a , 1999,
Abstract: surgical time is not very significant risk factor in elective surgery. it is much less important when there is an adequate surgical management and anesthetic control. the videolaparoscopic method demands a greater anesthetic monitoring and produces minimun traumatism. however, reference is made to extremely elevated surgical times during training that limit surgical productivity and increase the cost of the operation and the number of complications particularly among major surgeons. this paper considers age, training, surgical time and complications in videolaparoscopic surgery. prudence influences on the surgical time but reduces conversion and complications. to obtain the basic qualification in videolaparoscopic surgery, it is necessary to perform 40 or 50 operations
Exceso de mineralocorticoides en hipertensos esenciales: enfoque clínico-diagnóstico
Cortés P,Paola; Fardella B,Carlos; Oestreicher C,Eveline; Gac E,Homero; Mosso G,Lorena; Soto M,Julia; Foradori C,Arnaldo; Claverie R,Ximena; Ahuad N,Jessica; Montero L,Joaquín;
Revista médica de Chile , 2000, DOI: 10.4067/S0034-98872000000900001
Abstract: background: primary hyperaldosteronism is more frequent among subjects with essential hypertension than previously thought. the prevalence, according to local and international evidence could fluctuate between 9 and 10%. aim: to investigate if subjects with essential hypertension have different aldosterone and renin plasma levels than normotensive subjects. patients and methods: one hundred twenty five subjects with essential hypertension, not receiving medications for at least two weeks prior to the study and 168 age and sex matched normotensive controls were studied. blood was drawn between 9 and 10 am during a sodium free diet to determine plasma aldosterone, plasma renin activity and potassium. results: plasma aldosterone was higher in hypertensive subjects than controls (11.6 ± 7.6 and 9.9 ± 5.1 ng/dl respectively; p=0.04). plasma renin activity was lower in hypertensives than controls (1.42 ± 1.28 and 1.88 ± 1.39 ng/ml/h respectively; p<0.001). thus, plasma aldosterone/plasma renin activity ratio was higher in hypertensives (13.8 ± 13.5 and 8.3 ± 7.8; p<0.001). a pathological ratio was defined as over 25, corresponding to the mean plus two standard deviations of the control group. primary hyperaldosteronism was found in 5/125 hypertensives (4%) and 1/168 normotensive subject (0.6%). none had hypokalemia. conclusions: subjects with essential hypertension have higher plasma aldosterone and lower plasma renin activity than normal controls. a plasma aldosterone/plasma renin activity over 25 was defined as abnormal. (rev méd chile 2000; 128: 955-61)
3-base periodicity in coding DNA is affected by intercodon dinucleotides
Joaquín Sánchez
Bioinformation , 2011,
Abstract: All coding DNAs exhibit 3-base periodicity (TBP), which may be defined as the tendency of nucleotides and higher order n-tuples, e.g. trinucleotides (triplets), to be preferentially spaced by 3, 6, 9 etc, bases, and we have proposed an association between TBP and clustering of same-phase triplets. We here investigated if TBP was affected by intercodon dinucleotide tendencies and whether clustering of same-phase triplets was involved. Under constant protein sequence intercodon dinucleotide frequencies depend on the distribution of synonymous codons. So, possible effects were revealed by randomly exchanging synonymous codons without altering protein sequences to subsequently document changes in TBP via frequency distribution of distances (FDD) of DNA triplets. A tripartite positive correlation was found between intercodon dinucleotide frequencies, clustering of same-phase triplets and TBP. So, intercodon C|A (where “|” indicates the boundary between codons) was more frequent in native human DNA than in the codon-shuffled sequences; higher C|A frequency occurred along with more frequent clustering of C|AN triplets (where N jointly represents A, C, G and T) and with intense CAN TBP. The opposite was found for C|G, which was less frequent in native than in shuffled sequences; lower C|G frequency occurred together with reduced clustering of C|GN triplets and with less intense CGN TBP. We hence propose that intercodon dinucleotides affect TBP via same-phase triplet clustering. A possible biological relevance of our findings is briefly discussed.
Prevención de la infección neonatal por estreptococo del grupo B: ?Es necesaria en nuestro medio?
Cortés,Hernán;
Revista Colombiana de Obstetricia y Ginecología , 2005,
Abstract: group b streptococcus or agalactie (gbs) is a habitual saprophytic microorganism of the genitourinary and gastrointestinal tracts of human beings. vertical transmission from the mother to the fetus, as occurs, favors the development of early onset disease in the neonate. the prevalence of maternal colonization is variable (5-30%) depending on the country, race, age and technique of sampling used for culture. approximately 40-70% of neonates from mothers who are positive for gbs are colonized and of those, 1 to 2% will develop invasive disease (sepsis, meningitis or pneumonia). fortunately, most of these infections can be prevented by prophylactic antibiotics during labor and delivery. however, in our environment, the impact of this pathology is unknown, and strategies for prevention have not been implemented. research in our country is needed to address this issue and implement diagnostic and treatment strategies.
Qué hay de nuevo, viejo? El Estado y la estrategia política, entre Nikos Poulantzas y el marxismo abierto
Martín Cortés
Argumentos (México, D.F.) , 2012,
Abstract: Este trabajo compara las concepciones de Estado y estrategia política presentes en los textos de Nikos Poulantzas, en particular en Estado, poder y socialismo su último libro, de 1978 , y las producciones del llamado marxismo abierto, tomando principalmente escritos de John Holloway y Werner Bonefeld. Las hipótesis del trabajo sostienen que los desarrollos de Poulantzas respecto del Estado fueron o bien desatendidas por el marxismo abierto, o bien impugnados sin analizarlos en profundidad. Al mismo tiempo, el trabajo sostiene que los planteos del autor griego guardan más afinidad con las posiciones del marxismo abierto del que los propios autores de esta corriente admiten. Incluso podría decirse que, en algunos puntos, no es demasiado lo que éstos agregan a lo planteado por Poulantzas. Palabras clave: Estado, Poulantzas, marxismo abierto.
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